A similar post by a newbie in Lonely Planet's forum claims that the referring employee gets a $10 commission. It's a different Booker ID in that forum's post. (Also note that the user who posted it there has posted it in 3 different areas of that BB -- their only 3 posts in the whole forum.)
Also
posted here by someone that states upfront that they get "a little cash reward."
I did a search in Google for "fairmont nfaf" (without quotes).